Winch



A ril 27,1926. 1,582,531

- A. E. NORRIS WINCH Original Filed March 31. 1921 lave-7270?.- eflimonEmrnis,

' Original application filed March 31,

Patented Apr. 27, 1926 UNITED STATES ALMON E. NORRIS, OF BROOKLINE, MASSACHUSETTS.

WINCH.

To all whom it maa/ concern:

Be it known that I, ALMON E. NORRIS, a citizen of the United States, and a resident of Brookline, in the county of Norfolk and State of Massachusetts, have. invented an Improvement in \Vinches, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to winches, and aims to facilitate the dismounting of the mechanism, as well as to prevent the escape of oil from the interior thereof. The application is a division of my prior application,

'Ser. No. 457,271, filed March 31, 1921, patented Jan. 20, 1925, No. 1,523,829.

The invention will be best understood by reference to the following description, when taken in connection with the accompanying drawings of one illustrative embodiment thereof, while its-scope will be more partic-' ularly pointed out in the appended claims.

In the drawing, the single figure shown is a central, vertical, sectional view of a winch exemplifying the invention. 7

Referring to the drawing, and to the embodiment of the invention which is selected for exeinplification, there is shown a winch comprising a casing 4, presenting a base 6 surmounted by a winch head 8, to which a worm gear 10 is suitably secured, as by means of cap-screws 12. A worm 14, meshing with the worm gear, drives the latter and thereby rotates a winch head, which is mounted to turn on upper and lower bearings 16 and 18, presented by a hollow column 20, upstanding from and conveniently formed as an integral part of the base 6. The described gearing is intended to run in an oil bath contained in the casing.

The construction is such that the winch head and the worm gear may be removed as a unit, without the necessity of detaching one from the other, this being rendered possible byproviding the casing with a circumferential wall 22, encircling the worm gear and affording an annular chamber 24 having an entrance 26, whose diameter is greater than that of the worm gear. The chamber, however, is normally closed, and the mechanism therein is protected against the entrance of foreign matter by providing the winch head with a part, herein a skirt 28, at least as large in diameter as the entrance 26,

1921, Serial No. 457,271. Divided and this application filed April 13, 1922. Serial No. 552,400. 7

and preferably overlapping the latter, as clearly shown in the drawing. This skirt 28 and'the wall 22 have confronting surfaces opposed end to end, and they are suitably constructed to exclude foreign matter, and to prevent the escape of oil, as by providing them with interjacent parts, in the present example inner and outer depending flanges 30 and 32 on the skirt, presenting between them an annular groove 34, which receives an upstanding flange 36 presented by the wall 22.

It has been found that the best results are secured by providing the depending flange 30 with a beveled surface 38, and by providing the flange 36 with a similar, but oppositely beveled, surface 40. The first bevel tends to prevent the oil from creeping up into the joint presented by the adjacent surfaces of the flanges 36 and 30, while the second bevel forms an enlarged space or chamber, which tends to break the adhesion of the oil, and to allow the latter to gravitate back into the casing. The cooperative effect of the bevels is to eliminate all leakage of oil at the joint. Thus, the described construction permits the parts to be easily and quickly dismounted, without the necessity of detaching the worm gear from the winch head, while at the same time affording proper protection for the driving mechanism from foreign substances, and preventing the escape of lubricant.

Having thus described one embodiment of my invention, but without limit-ing myself thereto, what I claim and desire by Letters Patent to secure is:

1. In a cable winding apparatus, the combination of a cable winding spool and a base presenting a chamber, and driving means housed in said chamber, said spool and base being provided with means to prevent the escape of oil at the joint between them, the last-mentioned means including concentric annular parts one of which presents a beveled edge within said chamber.

2. In a cable winding apparatus, the combination of a cable winding spool and a base presenting a chamber, and driving means housed in said chamber, said spool and base being provided with means to prevent the escape of oil at the joint between them, the last-mentioned means including two annular parts one of which presents an annular groove and the other an annular projection entering said groove, said parts presenting closely adjacent confronting surfaces, said projection entering the groove to an extent which leaves a chamber larger than the space between said confronting surfaces.

3. In a cable winding apparatus, the combination of a cable winding spool and a base presenting a chamber, and driving means housed in said chamber, said spool and base being provided with means to prevent the esca e of oil at the joint between them, the last-mentioned means including two annular parts one of which presents an annula' groove and the other an annular projection, the latter presenting a beveled. end.

l. In a cable winding apparatus, the combination of a cable winding spool and a base presenting a chamber, and driving means housed in said chamber, said spool and base being provided with means to prevent the escape of oil at the joint between them, the last-mentioned means including two annular parts one of which presents an annular groove and the other an annular projection, the latter presenting an inwardly facing beveled surface.

5. In a cable winding apparatus, the combination of a cable winding spool and a base presenting a chamber, and driving means housed in said chamber, said spool and base being provided'with means to prevent the escape of oil at the joint between them, the last-mentioned means including two annular parts one of which presents an inner, annular part exposed within said chamber and having an inwardly facing beveled end and presenting also an annular groove outwardl v beyond the inner annular part, and the other annular part being received in said groove and presenting an inwardly facing beveled end.

In testimony whereof, I have signed my name to this specification.

ALBION E. NORRIS. 

